From e533a3152712876cfdbc5a5579513120fef499fa Mon Sep 17 00:00:00 2001
From: eric thul <thul.eric@gmail.com>
Date: Sat, 18 Jul 2015 09:10:59 -0400
Subject: Capturing stderr on psc invocation

Resolves #17
---
 src/ChildProcess.purs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/ChildProcess.purs b/src/ChildProcess.purs
index c9ff23b..ad4e20f 100644
--- a/src/ChildProcess.purs
+++ b/src/ChildProcess.purs
@@ -23,13 +23,23 @@ function spawnFn(command, args, errback, callback) {
 
     var stdout = new Buffer(0);
 
+    var stderr = new Buffer(0);
+
     process.stdout.on('data', function(data){
       stdout = Buffer.concat([stdout, new Buffer(data)]);
     });
 
+    process.stderr.on('data', function(data){
+      stderr = Buffer.concat([stderr, new Buffer(data)]);
+    });
+
     process.on('close', function(code){
-      if (code !== 0) errback(new Error(stdout.toString()))();
-      else callback(stdout.toString())();
+      var output = stdout.toString();
+
+      var error = output.length === 0 ? stderr.toString() : output + "\n" + stderr.toString();
+
+      if (code !== 0) errback(new Error(error))();
+      else callback(output)();
     });
   };
 }
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